The network's entire block jumps as NBC sees a spike for "Parks and Recreation" and ABC's "Assets" slips below the danger zone.

With growth on every series, CBS blew the rest of the Big Four out of the water on Thursday night. The network averaged a robust 3.0 rating among adults 18-49 and 12.1 million viewers for the three-hour block -- with highs for several series.

The Big Bang Theory, which set records last January, brought in its largest 8 p.m. audience ever with 20.7 million viewers. Among adults 18-49, The Big Bang Theory (5.6 rating) was up two-tenths of a point. The Millers (3.3 adults), tying its series high, was up half of a point. The Crazy Ones (2.4 adults) moved up four-tenths and both Two and a Half Men (2.4 adults) and Elementary (2.0 adults) were up two-tenths.

NBC saw growth too, albeit more modestly. Community (1.4 adults) improved two-tenths from last week's season premiere and Parks and Recreation (1.4 adults) returned from its long hiatus up four-tenths of a point. Sean Saves the World (1.0 adults) and The Michael J. Fox Show (1.0 adults) both improved from last week by two-tenths. A steady Parenthood (1.3 adults) gave the network nightly averages of a 1.2 adults rating and 3.6 million viewers.

The Taste (1.3 adults) held last week's premiere score, while The Assets (0.6 adults) sunk a tenth of a point from its poor premiere. That makes it the lowest-rated Big Four drama outing of the season. ABC took a 1.0 rating with adults 18-49 and 3.95 million viewers.

Encores of Sleepy Hollow filled the Fox schedule, posting an average 0.7 rating among adults 18-49 and 2.4 million viewers.

The CW, also in encores, took a 0.3 adults rating and 945,000 viewers.